Invalid lifting



PLNELSON. mvnuo unme APPUANCE on BEDSTEADS. APPLICATION FILED AUG. 17.l9l8. 1,303,368, Patented May 13, 1919.

3 SHEETS-SHEET 1 mt mmms runes co" PN07 LITHO.. wasummun.

Patented May13, 1919..

3 SHEETS-SHEETZ- P. NELSON.

INVALID LIFTSNG APPLIANCE FOR BEDSTEADS.

APPLICATION FILED AUG. I1. 1918.

1,303,368. Patented May18, 1919.

3 SHEETS-SHEET 3.

abhor/nus m: NUNRL PLIERS130..PHDID-LIIHOY,WASHINGTON,D c

PHILIP NELSON, OF EAST LAS VEGAS, NEW MEXICO.

INVAIiID-LIFTING APPLIANCE FOR BEDSTEADS.

Specification of Letters Patent.

Patented May 1a, 1919.

Application filed August 17, 1918. Serial No. 250,339.

To all whom it may concern:

Be it known that I, PHILIP NnLsoN, a citizen of the United States,residing at East Las Vegas, in the county of San Miguel and State of NewMexico, have invented certain new and useful Improvements in InvalidLifting Appliances for Bedsteads, of which the following is aspecification, reference being had to the. accompanying drawings.

This invention relates to an improved invalid lifting appliance forbed-steads, and has for its primary object to provide a simple, lightlyconstructed, and substantial bedstead attachment whereby invalids may beeasily and quickly lifted from or lowered upon the bed mattress and alsomoved to a desired position for the purpose of obtaining greater easeand comfort.

It is another and more particular object of my invention to provide anappliance for the above purpose including a metallic cot frameconstructed of jointed relatively movable sections and detachableflexible sheet sections upon which the patient is immediately supported.

It is also an important object of the invention to provide a frame forthe lifting mechanism shiftable upon the side rails of the bedstead,means for clam-ping said frame in a desired position against shiftingmovement, and flexible means for connecting the parts of the cot frameto the lifting mechanism.

It is also a further general object of my invention to provide aninvalid lifting appliance for beds which may be readily applied to theordinary bed without necessitating any material changes therein, can bemanufactured at relatively small cost, and which will also be highlyconvenient and serviceable in practical use.

With the above and other objects in view, the invention consists in theimproved combination, construction and relative arrangement of thevarious parts as will be hereinafter more fully described, subsequentlyclaimed and illustrated in the accompanying drawing in which similarreference characters designate corresponding parts throughout theseveral views, and wherein Figure 1. is a side elevation, certain. of

line jecting inwardly. flanges at the pivotally connected ends of theparts being broken awayand illustrating one embodiment of my invention;

Fig. 2 is a section taken on the line 2-2 of Fig. 1;

Fig. .3 is a top plan view;

Fig. f is a section taken on the line H of Fig. 3';

Fig. 5 is a section taken on the line 5-5 of Fig. 3 the gearing beingshown in elevation; i

Fig. 6 is a plan view of the supporting cot; Fi 7 is a detail sectiontaken on the 7- 1 of Fig. 6 showing the locking means for the cot framesections; and

Fig. 8 is a section taken on the line 88 of Fig. 7

Referring in detail to the drawings, 5 and 6 respectively designate thehead and foot sections of a bedstead and? the side rails thereof, whichas seen in Fig. 2, are of the usual cross sectional forin. Slats 8 areconnected at their ends upon the horizontal flanges of the rails 7 tosupport a suitable mattress, indicated at 9. It will be understood thatthis bedstead constitutes no part of my present invention and that thelift- 'ing apparatus and improved cot construction, which I shallpresently describe in detail, may be used in connection with bed steadsof various constructions now commonly employed in private homes,hospitals and similar institutions.

As herein illustrated, the cot frame consists of side bars, eachcomprising two sections 10 which are pivotally connected together at oneof their ends, as shown at 11. To the other end of each section 10 ofthe side bars, one section 12 of the end bars of the cot frame isconnected. These frame sections 12 at each end of the cot frame arepivotally connected, as at 14, by means of the interposed frame section13. Each section of the cot frame is of angular form in cross section,the horizontal flanges thereof pro- Upon said horizontal the framesections, the sleeves or knuckles 15 are riveted or otherwise securelyfixed. When the frame sections are disposed in longitudinal alinement,suitable locking pins 16 are inserted. into the opposed sleeves 1.5.

Thus, the several sections of the frame are securely locked togetheragainst relative movement.

Metal loops 17 are attached to the inner edges of the horizontal flangesof the longitudinal sections 10 of said frame and with said loops,suitable snap hooks or other detachable fasteningel'ements on the endsof the flexible supporting members 18 are adapted to be engaged. Thesesupporting members may be ofcanvas or other suitable material, one ofsaid: members being of considerably greater length than the others andprovided with an opening 19 therein adapted! to receive abed. pain; Tothe under sides of the horizontal flanges of the frame sections, felt orother suitable material, shown at 20, is secured for contact with thecovering of the mattressso that said covering will not betornorotherwise. injured by the metal frame. i

The hoisting; mechanism for the cot above described, is mounted upon-.anadjustable frame structure. This structure includes a pluralityof sideuprights 21, the uprights in each series being connected at their lowerends;' a longitudinal bar 22 which is adapted to restupon the ends ofthe mattress supporting: slats 8' inwardly of the vertical anges of therails 7. These uprights are preferably formed by suitably bending metalbars, the intermediate portions 23 of which connect the correspondinguprights at opposite-sides of the frame to. each other. Longitudinallyextending, angular plates 24 are secured to the series-of bars andrigidly conneet the sameeat thejuncture of the uprights withthe-transverse intermediate portions 23. Upon the central upright 21ineach series adjacent the lower end thereof, a rod 25 is pivotallymounted at one of its ends, as shownat 26. clamping screw 27 isthreadedintheot-her, orfree end of. this red. This screw is adapted forbinding engagement -with; ;a metal bar 28 fixed to. the under side ofthe bedstead rails 7 and inwardly of a downwardlyprojecting flange orrod 29 on the outeredge: ofcsaid bar. By means of these;clamping'devices, the frame structure may be rigidly secured and held inits adjusted position relative to the bedstead. Suitableclips 30 aresecured to the uprights 21 in which the-rods 25 may be engaged when; theclamps are released and swung upwardlysoas to support said rods duringthe shifting. movement of the frame.

A longitudinally extending shaft 31 is mounted insuitable bearings uponthe transverse portions23-of the frame bars and to saidshaft. atoneof'its ends a beveled gear 32 is fixed. Thisgear meshes with asimilar gear 33 secured upon the transversely extending shaft 34 whichis journaled in suitable bearings secured upon a bar 35 connecting thelongitudinally extending plates 24 at one of their ends. Peripherallygrooved wheels 36 are also fixed upon said shaft at each end thereof. Insuitable bearing plates 37, centrally secured upon the end bars 23, thespaced shafts 38 are journaled, and on each of said shafts a groovedwheel 39 is likewise fixed. A gear 40 is also secured upon each shaft38, said gears having meshing engagement with each other. One of thesegears 40 also meshes with a gear 41 fixed upon the shaft 31.

Upon the intermediate frame bar 23, the gear wheel 42 is rotatablymounted and has meshing engagement with a gear wheel 43 fixed on theshaft 31, the latter gear wheel operating through an opening in the bar23. Upon the axis of the gear 42 at one side of said gear, a ratchet 44is fixed with which a gravity locking dog 45 mounted upon the bar 23 isnormally engaged. 46 designates an operating crank connected to the axisof the gear 42.

To each of the side bar sections 10 of the cot frame, chains or otherflexible elements 47 are connected at one of their ends. Similar chains48 are also connected to the sections 12 of the cot frame at oneendthereof. The grooved wheels 39 are provided with suitable means to whichthe other ends of the chains 47 are adapted to be connected,

'36 are equipped with suitable means for the connection of the free endsof the chains 48 thereto.

In the use of the apparatus, when it is desired to lift or elevate thepatient, the side chains 47 are connected to the corresponding wheels ordrums 39. The crank 46 is then turned to rotate the shaft 31 and impartrotation through the gearing to the wheels 39, whereby the chains willbe wound thereon and the cot frame with the patient supported upon theflexible sheet sections 18 lifted or elevated to the desired position.If it be desired to turn the patient over on his side, the chains 47 ononly one side of the cot are connected to the wheels 39. The lockingpins 16 at the ends of the cot frame and at this side thereof, are thenremoved so that upon the rotation of the wheels 39 and the winding ofthe chains thereon, this one side of the cot frame will be moved, theside sections 10 thereof remaining rigidly connected together and thesections 12 swinging upon the ends of the sections 13. If it is desiredto dispose the patient in a reclining'position, all of the chains 47 aredisconnected from the rollers 39 and the chains 48 are connected to therollers 36. The locking pins 16 connecting the side bar sections 10 ofthe cot frame at each side thereof are now removed so that uponoperating the lifting gearing and winding the chains upon the rollers36, the head end of the cot frame will be lifted to an inclinedposition, as seen in dotted lines in Fig. l of the drawings. In thelatter operation, the supporting structure for the lifting mechanism isshifted to the foot end of the bedstead, as also shown in dotted linesin Fig. 1, and securely clamped in such position in the manner aboveexplained. i

From the above description, taken in connection with the accompanyingdrawings, the construction, manner of operation and several advantagesof my invention .will be clearly and fully understood. The various partsof the apparatus are of simple and durable construction, as well as Ilight in weight, and can be readily applied to the ordinary bedstead.The flexible body supporting sections 18 may be detached from the cotframe when they become soiled and replaced by clean sections. I haveherein shown and described what I have-found to be a very practical andserviceable embodiment of the invention, but it will be, of course,understood that the several structural features herein referred to aresusceptible of many minor modifications and I, accordingly, reserve theprivilege of adopting all such legitimate changes as may be fairlyembodied within the spirit and scope of the invention as claimed.

In combination, a cot having relatively movable pivotally connectedframe sections, means for locking the frame sections against relativemovement, a relatively stationary frame structure extending over thecot, lifting mechanism mounted upon the frame structure and includingspaced pairs of drums having their axes disposed in parallel relation,chains connected to each side of the cot frame, the chains at one sidebeing adapted for connection to one drum in each pair, additional drumshaving their axes of rotation disposed at right angles to the firstnamed drums, chains connected to one end of the cot frame and adaptedfor connection to the latter drums, and a common manually operablegearing for said drums.

In testimony whereof I hereunto aflix my signature in the presence oftwo witnesses.

PHILIP NELSON.

Witnesses F. E. JUAROINE, J. VAN Horssnmnc.

Copies of this patent may be obtained for five cents each, by addressingthe "Commissioner of Iatents. Washington, D. 0."

